Originally posted by _I_:

4070 super recommends a 650w or better psu

550w may work, but will be at a higher load and much less efficient than 650w or greater
but if it does not work, it may damage the system

poor quality psu will spike rails and continue trying to deliver power to rails when its unable to
which can sometimes spike way out of spec and damage anything on the 12v, 5v or 3.3v rails (gpu, drives, usb devices etc..)
hopefully the board or psu will turn off before that happens

just reminded me its a 12v high power connector, don't have those as its a semi old gigabyte p550b

thanks for the help though

Originally posted by Xuild:

Originally posted by _I_:

4070 super recommends a 650w or better psu

550w may work, but will be at a higher load and much less efficient than 650w or greater
but if it does not work, it may damage the system

poor quality psu will spike rails and continue trying to deliver power to rails when its unable to
which can sometimes spike way out of spec and damage anything on the 12v, 5v or 3.3v rails (gpu, drives, usb devices etc..)
hopefully the board or psu will turn off before that happens

just reminded me its a 12v high power connector, don't have those as its a semi old gigabyte p550b

thanks for the help though

4070s is 220w
doesnt need all the power of the 12vhpwr connector
but a good chunk of it


a 2 pci-e power pigtail to 12vhpwr adapter would work with it
https://www.amazon.com/KEXIAO-Double-Adapter-12VHPWR-Motherboards/dp/B0F7LPBWF2

but it will lie to the gpu, telling it it can deliver 600w, when it will have a 300w limit (each pci-e 6+2 = 150w)
its grounding all 4 of the sense pins, telling it that its 600w
to correct it, just clip sense1, (pin s4) to open its connection
https://imgur.com/a/g2fbEPq

Originally posted by _I_:

Originally posted by Xuild:

just reminded me its a 12v high power connector, don't have those as its a semi old gigabyte p550b

thanks for the help though

4070s is 220w
doesnt need all the power of the 12vhpwr connector
but a good chunk of it


a 2 pci-e power pigtail to 12vhpwr adapter would work with it
https://www.amazon.com/KEXIAO-Double-Adapter-12VHPWR-Motherboards/dp/B0F7LPBWF2

but it will lie to the gpu, telling it it can deliver 600w, when it will have a 300w limit (each pci-e 6+2 = 150w)
its grounding all 4 of the sense pins, telling it that its 600w
to correct it, just clip sense1, (pin s4) to open its connection
https://imgur.com/a/g2fbEPq

ah okay, would it work with the PNY 4070 super? cheapest once i could find from a brand i can trust that'd actually fit in my computer

as for fitting you would have to measure

its recommended not to use adapters unless 100% necessary
or get a psu with all the correct connectors and more than enough power for the system

nvidia says 650w but thats to cover high end cpus and lower quality power supplies
aliendell builds with limited upgrade path and cheaping out as much as they can get away with a ~350w brick

id look for a bequiet, evga, seasonic, corsair (non v) psu, over 650w 80gold with the 12vhpwr connector
https://pcpartpicker.com/products/power-supply/#e=6,5,4&p=1,3&J=1,4&A=650000000000,2800000000000&m=337,11,14,71&sort=price&page=1

i know they are $80 or more, but you are looking at a ~$700+ gpu
worth the investment to protect it and the rest of the build
never cheap out on a psu, its the one component that can save the rest if all goes wrong

Originally posted by Xuild:

Originally posted by _I_:

4070 super recommends a 650w or better psu

550w may work, but will be at a higher load and much less efficient than 650w or greater
but if it does not work, it may damage the system

poor quality psu will spike rails and continue trying to deliver power to rails when its unable to
which can sometimes spike way out of spec and damage anything on the 12v, 5v or 3.3v rails (gpu, drives, usb devices etc..)
hopefully the board or psu will turn off before that happens

just reminded me its a 12v high power connector, don't have those as its a semi old gigabyte p550b

thanks for the help though

Would change that PSU first, those old gigabyte psus are known to be weapons of destruction, gamer nexus did something about them back in the day, your 3600 would probably bottleneck with your 4070s, if you have a good mobo you can try upgrading to a 5700x3d or better

Originally posted by chuu:

Would change that PSU first, those old gigabyte psus are known to be weapons of destruction, gamer nexus did something about them back in the day, your 3600 would probably bottleneck with your 4070s, if you have a good mobo you can try upgrading to a 5700x3d or better

that was only a few models
GP-P750GM and GP-P850GM models

but the gigabyte p550b is a very old model, only 80+ bronze rated, not gold which has been the standard for 10+ years
it should be replace anyway

Originally posted by chuu:

Originally posted by Xuild:

just reminded me its a 12v high power connector, don't have those as its a semi old gigabyte p550b

thanks for the help though

Would change that PSU first, those old gigabyte psus are known to be weapons of destruction, gamer nexus did something about them back in the day, your 3600 would probably bottleneck with your 4070s, if you have a good mobo you can try upgrading to a 5700x3d or better

honestly havent had a problem with it and i'm going to upgrade cpu after the gpu for specific reasons

but yeah i'll replace my psu, its not too bad and survived 5 years already plus i need a modular psu since i don't want to leave the fire hazardinator-2000 bundle of cables stuffed into some random compartment

Ryaen 5 3600 is a 65w cpu

4070 super is about 220w

So 65+ 220 + ~50 for the other stuff =335w under full load which isn't going to naturally happen.

You 550w power supply might not be 550w on the 12v rail. What is your power supply model. You can also look at the sticker on your psu and see how many amps the +12v is rated for.

Originally posted by Set-115689:

Ryaen 5 3600 is a 65w cpu

4070 super is about 220w

So 65+ 220 + ~50 for the other stuff =335w under full load which isn't going to naturally happen.

You 550w power supply might not be 550w on the 12v rail. What is your power supply model. You can also look at the sticker on your psu and see how many amps the +12v is rated for.

i completely forgot i don't have a 12v connector and its not modular either so i'll just upgrade to a cheap ish reliable PSU

Is your pc a brand name pc like hp, dell, etc...? Maybe one that might use a proprietary non standard power supply? Ones where the power outputs or connections can be different than standard ones

Originally posted by Set-115689:

Is your pc a brand name pc like hp, dell, etc...? Maybe one that might use a proprietary non standard power supply? Ones where the power outputs or connections can be different than standard ones

no, its a gigabyte p550b psu custom build and i'm pretty sure it doesnt have a 12v connector

i didn't do the psu but i did everything else

522w on the +12v rail

PCI-e 6+2 Pin x 2

Should have 2 pcie 6+2 connectors. Which are the ones you need. 6 pins stuck together and a 2 pin hanging off the side. And 2 of them so you can fit a gpu using a power adaptor that probably comes with the gpu. If it's used then maybe they won't give it to you?

Check behind the rear panel they might be coiled up there. I doubt they cut them off. It would be evident if they did.

https://www.gigabyte.com/Power-Supply/GP-P550B

Originally posted by Set-115689:

522w on the +12v rail

PCI-e 6+2 Pin x 2

Should have 2 pcie 6+2 connectors. Which are the ones you need. 6 pins stuck together and a 2 pin hanging off the side. And 2 of them so you can fit a gpu using a power adaptor that probably comes with the gpu. If it's used then maybe they won't give it to you?

Check behind the rear panel they might be coiled up there. I doubt they cut them off. It would be evident if they did.

https://www.gigabyte.com/Power-Supply/GP-P550B

ah okay, do you think it'd even be safe to have the 4070 super in there though? don't want to risk a gpu that expensive

Should be fine.

Psu isn't reviewed well.